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I have an MSI motherborad model MS-7366 and I need to plug a DB9 male to 10 pin header pc blanking plate I just need to make sure I am pluging it in the right place

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Posted on Jan 28, 2009

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Front panel connections

I don't find the Front Panel header pinout online, nor do I have an MSI MS-5191 in the shop.

I would suggest using one the LED lights with two wires.
(3-wire is a dual color LED)

There are two rows of pins. Usually the Power On switch, Power On LED, and Speaker; are on the same row.
HarDDrive activity LED, and Reset Switch are on the opposite row.

Speaker has 4-pins designated for it. All the others use 2-pins.
(Unless the PWR ON LED is a dual color jobbie)

Touch two pins next to each other, in the same row; with the 2-wire LED.
Start with finding the Power On switch first.

Usually the top row 1st two pins are Power On LED (Light)
Next in line are the 2 pins for the Power On switch.
Bottom row 1st two pins are usually HarDDrive activity LED (light)
Next 2-pins are usually Reset switch.

May not apply to a motherboard old enough to use a Socket 7 processor socket.
There may be 18 to 20-pins.
Bear in mind that many are not used, and probably 4 are for an internal speaker, for hearing BIOS Beep Codes.
May be two separate Front Panel headers.

Once you find the two contact pins in the Front Panel header, for the Power On switch; I would put the Power On switch wires on.
The small pin connector on the wire/s, will keep you from accidentally touching these two pins again, when the computer is on.

Now you have the two pins for the Power On switch, and the computer is running; then keep touching 2-pins at a time with the LED. (Light Emitting Diode)

LED stays on? You have the Power On LED (Light) pins.
LED blinks? HarDDrive activity LED (light) pins.
Computer restarts? Reset switch pins.

Look for abbreviations near the pins in the Front panel header.

PWR, Pwr, Pwr On, Sw, and SW; are just some of the abbreviations for the Power On switch.

HDD LED, and HDD are two for the HarDDrive activity LED. (Light)
(If it states HDD SW it is the Power On switch. Weird old way of marking)

RST, Reset, and RSW, are for the Reset Switch.
(Reset Button)

If you see 4 pins marked with a bracket ( [ -> Turn so it's horizontal), these are for the internal speaker.

Type MSI front panel connector in your search bar, and look at -> images. See if you can find an image of your MSI Front Panel header pinout.

You can bet MSI carried out that Front Panel header pinout, on other MSI motherboards, besides the MS-5191.

The MSI MS-5191 may have been a motherboard made by MSI, especially for a pre-built computer manufacturer, and not listed on their website as an OEM motherboard.
(Original Equipment Manufacturer)

Won't have the Front Panel header pinout, listed on MSI's support website. (Doesn't)
But you can bet there IS an OEM motherboard made by MSI, that the Front Panel header DOES match.

May be different expansion slots, or motherboard chipset, or whatever; but the same Front Panel header pinout.


Jan 05, 2013 | AMD MicroStar MS-5191 Socket 7 mATX...

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Do you have any user manual for front panel usb

(MSI PM8M-V H, is version 2.0 )

Hover your mouse cursor on the Download tab.
(Overview / Specification / Download / Support / etc.)

In the drop down list, click on - Manual
Under the subheading - Download, click on the blue -

[ This is a Zip file. A Zip file is a file that is compressed, to send easier. The above manual is for the M7104v1.0
It will work for the version 2.0 also.

You need a program to 'Unzip' it. (Decompress)
If WinZip is not working on your computer, go to 7-Zip, and download for free.
If you need guidance in downloading, and unzipping, post back in a Comment ]

There are two USB headers on the motherboard for the Front Panel,
JUSB1 and JUSB2. (Junction USB 1 and Junction USB 2)

Looking along the bottom of the motherboard, FROM the Right going towards the Left;

JFP1 header; (Front Panel main wires)
Header with 4 pins on the Top row, and 5 pins on the Bottom row.

JFP2 header; (Dual color Power On LED, and Speaker)
Header with 4 pins on the Top row, {Speaker}, and 3 pins on the Bottom row.

JUSB2 header.

JUSB1 header.

EACH USB header will support TWO USB ports in the Front Panel.
JUSB1 supports two,
JUSB2 supports two.

For each USB header there are 5 pins across the Top, 4 pins across the Bottom.
The pins are numbered EVEN across the Top, and ODD across the Bottom.

Starting from the LEFT side going across to the RIGHT side;
on the TOP row for JUSB2 and JUSB1;
Pins 2, 4, 6, 8 and 10.

Starting from the LEFT side going across to the RIGHT side;
on the BOTTOM row for JUSB1 and JUSB2;
Pins 1, 3, 5, and 7. There is NO pin 9.

A) Pin 2 is VCC
B) Pin 4 is USB1-
C) Pin 6 is USB1+
D) Pin 8 is Ground

E) Pin 10 is USBOC

Pin 10 is N/C -> Not Connected.
It is there, and Pin 9 is not there, to key which way a connector can go on. Only ONE way.

F) Pin 1 is VCC
G) Pin 3 is USB0-
H) Pin 5 is USB0+
I) Pin 7 is Ground

There is NO pin 9.

(The USB technology used is USB 2.0)

Let's read together,
Under - USB pinout signals;

"USB is a serial bus. It uses 4 shielded wires: two for power (+5v & GND) and two for differential data signals (labeled as D+ and D- in pinout). NRZI (Non Return to Zero Invert) encoding scheme used to send data with a sync field to synchronise the host, and receiver clocks. In USB data cable Data+ and Data- signals are transmitted on a twisted pair. No termination needed. Half-duplex differential signaling helps to combat the effects of electromagnetic noise on longer lines. Contrary to popular belief, D+ and D- operate together; they are not separate simplex connections."

See the USB examples in the link above, where it labels the contact pins?
The MALE connectors are shown on the Left side.
The FEMALE connectors are shown on the Right side.

Your USB ports will be FEMALE, on the Front Panel.
They are also the A style. USB A style. The Top example to the Right.

Just noting the following in case for some reason, the wires coming from those contact pins in the female USB connector, are not color coded correctly;

Even after you have the wires sorted out, as to which contact pins they go to, DOUBLE-check again. Do NOT just go by the color code of the wires.

You do NOT want to accidentally connect the +5 Volts (VCC), to the Ground!

Explaining further;
You connect the VCC wire, (Red), of the USB port in the Front Panel, to the Ground pin on the USB header on the motherboard.

(Which means the Ground wire of the USB port, (Black), will probably also be connected to the VCC pin, on the USB header of the motherboard)

Zzzzzzap! There goes your front USB ports. Both USB front panel headers on the motherboard, will be DONE!

Make sure!

Going on;
1) VCC or Vcc, goes back relating to Transistor technology.
Just think of it as the Positive, or power wire.
It is.
It is 5 Volts DC.

2) GND is Ground. It's a DC circuit, and you have a Positive, and a Negative, or Ground.

3) USB1-
That is -> Data-

USB0 is for one USB port in the Front Panel.
USB1 is for another USB port in the Front Panel.

[ Each USB header on the motherboard can be connected, to TWO USB ports on the Front Panel.
Therefore for the two JUSB1 and JUSB2, you can connect Four USB ports in the Front Panel ]

Data- on one USB port in the Front Panel, goes to USB0-

Data- on the other USB port in the Front Panel, goes to USB1-

4) Data+
Same thing.
Data+ on one of the USB ports in the Front Panel, goes to USB0+
Data+ on the other USB port in the Front Panel, goes to USB1+

EACH side of JUSB1 and JUSB2, will support one USB port on the Front Panel.
Two sides per JUSB1 and JUSB2 = 4 USB ports on the Front Panel.

For additional questions, or clarification to anything I have stated above, please post in a Comment.


Jul 20, 2012 | MSI Computers & Internet

2 Answers

MS-7142 motherboard:connecting jusb1 and jusb2 from panel of emachine

I have had some pretty good luck using MSI motherboards.

If you follow this link, you will be able to download your drivers and owner's manual for your motherboard.

You'll find a picture in the manual with instructions for those front USB ports.

good luck

May 20, 2009 | MSI K8MM-V Motherboard

1 Answer


I would like you to go here to,
Where it states -> File: 5185v10.zipVersion:--Release Date:-- Download
I would like you to click on Download.

You will see a small window come up. Click on the empty circle to the left of -> Save

Unless, you have your downloads going to your My Documents folder (Start>My Documents) this will wind up on your desktop screen. It will be a yellow folder icon with probably -> <- under it.

Double-click on the yellow folder icon. You will see 6 PDF files.
5185-1.pdf, 5185-2.pdf, and so on.
To open them and look at them, you double-click on each one, one at a time.
Then in the File Download window, you click on Open.

In 5185-2.pdf, it shows you the Front Panel header, and where the Front Panel wires go.
(Not trying to insult your intelligence. The Front Panel is where your Power On button is. The Front Panel header is on the motherboard. A connector on a motherboard, is referred to as a Header)

Should somehow you can't download this PDF Motherboard Manual, I will try to explain the connections on the Front Panel header. Bear with me.

Viewing the motherboard with the processor up at the top, ram memory to the right, the Front Panel header is on the bottom right. It is the JFP2 header.
(The motherboard manual, clearly shows this header as being the JFP2 header. Then it states it's the JFP1 header. Believe there was a misprint. You'll know)

It is situated lengthwise up and down, parallel to the right side of the motherboard, with two rows of pins.

The pins are numbered 1 through 20. There are spots where there are No pins. Where there is no pin, I will state -> No connect

Starting at the top on the left side, and coming down.
Pin 18, 17, 16, 15, 14, 13, 12, No connect, and 10.

Starting on the top right side, and coming down.
No connect, 8, 7, 6, 5, 4, No connect, 2, and 1.

1.Pins 18 and 17 are for the Reset Switch
2.Pins 16 through 13 are for the internal speaker
3.Pins 12 and 3 are for the HarDDrive activity LED.
4.Pins 10 and 1 are for the Keylock Switch
5.Pins 8 and 7 are for the Power On switch
6.Pins 6, 5, and 4, are for the Power LED
Pin 6 is the Positive connection, (+)

This motherboard uses an ATX 20-pin motherboard power connector.
It is at the top of the motherboard, and goes across lengthwise.
There are 20 socket holes.
Pin 1 is on the top left. It uses an Orange wire. (3.3 volts)
Pin 10 is all the way to the right. It uses a Yellow wire, (12 volts)

May 10, 2009 | Intel Motherboard

1 Answer

Need help on connecting up motherboard to rest of pc

I downloaded the PDF Motherboard Manual for the MSI MS-6380E Version 1.0, just now.

Let's take a look at that JFP1 header.
This view is looking at the JFP1 header, sitting at the bottom right of the motherboard, TO THE LEFT of the JFP2 header. The JFP2 header is at the very bottom right hand corner. The JFP1 header is just to the left of it. The processor is to the Top/Middle.

Looking at the pins going across the top of the JFP1 header, they are as follows,
2, 4, 6, 8, and there is no 10. There is no pin for 10.
Looking at the pins going across the bottom, they are as follows,
1, 3, 5, 7, and 9.

Pins 6 & 8 are for the Power On switch.
Pins 2 & 4 are for the Power On light, (LED light)
Pins 1 & 3 are for the HarDDrive activity light.
Pins 5 & 7 are used for a Reset switch. (IF, you have one)

Should you not have the Motherboard Manual, go here,
(If this doesn't come up as a link, copy and paste it into your address bar, then press the Enter key)
On this page click on ->Download <- to the right of
File: 6380ev1.0.exe Version: - - Release Date: - -

When you do a small window will come up. Click on the empty circle to the left of -> Save.
This file will be saved either directly to your deswktop screen, or your My Documents folder. I don't know how you have your downloads set up to be saved. I save them to my My Documents folder.

Once you see this file, double-click on it. It's a WinRar file. There will be a Microsoft 'Squawk Box' that comes up. "Warning this publisher could not be verified, ya-da, ya-da"

Ignore it! Click on -> Run
Now the WinRAR extraction archive will come up.
Click on Run.

Now go to the PDF file and double-click on it.
There's your Motherboard Manual.

Apr 12, 2009 | MSI KT3 Ultra Motherboard

1 Answer

Mainboard does not recognize the PS/2 mouse

Sounds like the serial port died. I have seen that happen before. You could try a DB9 to PS/2 adapter or DB9 to USB. The DB9 to PS/2 is cheaper of the 2.

Hope this helps.

Mar 01, 2009 | Shuttle HOT-591P (MB591P) Motherboard

2 Answers

Jusb connection wiring


These are standard pin outs as you notice your pins on JUSB areupside down to this but the pin locations are correct if you start from the blank (missing) pin and work backward.

Jun 05, 2008 | MSI MS-6528 LE Motherboard

3 Answers

N1996 mother board

The only way to to fix this if your headers on your wires aren't labeled is to trace them back from the switch it self. Usually they are white and red. The orientation on the motherboard pins doesn't matter since it's only a switch. Make sure you are putting the plug onto the power switch jumpers, and not the power led, reset, etc..

Jan 06, 2008 | Computers & Internet

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